1.
Opt Lett
; 48(24): 6476-6479, 2023 Dec 15.
Artigo
em Inglês
| MEDLINE
| ID: mdl-38099777
RESUMO
Tm3+-doped fluorotellurite fibers based on TeO2-BaF2-Y2O3(TBY) glasses were fabricated by using a rod-in-tube method. By using an 81â cm-long Tm3+-doped fluorotellurite fiber as the gain medium and a 1400 / 1570â nm dual-wavelength pump technique, lasing at 815â nm was obtained for a threshold pump power of 629â mW at 1400â nm and a fixed pump power of 960â mW at 1570â nm. As the 1400â nm pump power is increased to 1803â mW, the obtained maximum output power was about 1616â mW. The corresponding optical-to-optical conversion efficiency was about 58.5%. Our results show that Tm3+-doped fluorotellurite fibers are promising gain media for constructing 815â nm fiber lasers.